Question

(1-tan) square+(1-cot) square

Answer 1

${(1 - \tan) }^{2} + {(1 - \cot )}^{2} \\ = 1 + {tan}^{2} - 2tan \: + \\ 1 + {cot}^{2} - 2cot \\ = { \sec}^{2} + { \cosec}^{2} - 2tan - 2cot$
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